Adjustable deflector made of prefabricated reinforced concrete members

ABSTRACT

A vent for an industrial building has a support structure case from reinforced concrete and having a pair of vertical beams provided with swingable covers along the upper edges thereof. A deflector plate is spaced above the beams and overhangs the latter while vertical wind screens are provided with spacing from the outer edges of the deflector slab and are secured thereto.

United States Patent 1 [11] 3,793,930

Constantinescu et al. Feb. 26, 1974 [54] ggggfif zg kgfgg ggg OF FOREIGN PATENTS OR APPLICATIONS CO MEMBERS 552,900 5/l943 Great Brltaln 98/42 [75] Inventors: Petre B. Constantinescu; S tefan Primary Examiner wimam ODea f f Constamm Dummescu Assistant Examiner-Peter D. Ferguson Alexandrecm of Attorney, Agent, or Firm-Karl F. Ross; Herbert Bucarest, Romama A Dubno [73] Assignee: lnstitutui de Proiectari Al Industriei USOARE, Bucharest, Romania [57] ABSTRACT [22] Filed: Mar. 9, 1972 A vent for an industrial building has a support structure case from reinforced concrete and having a pair of vertical beams provided with swingable covers along the upper edges thereof. A deflector plate is 21 Appl. No.: 233,163

[52] US. Cl. 98/42, 52/ 199 spaced above the beams and overhangs the latter [5 l Int. Cl F24f 7/02 while vertical wind screens are provided with spacing [58] Field of Search 98/42, 43 R; 52/199 from the outer edges of the deflector slab and are secured thereto. [56] References Cited UNITED STATES PATENTS 3 Claims, 11 Drawing Figures l,642,675 9/1927 Goldman 49/3 PATENTED FEB 2 61974 SHEET 2 BF 5 PATENTED 3,793 830 SHEET 3 OF 5 FIG. 4

ADJUSTABLE DEFLECTOR MADE OF PREFABRICATED REINFORCED CONCRETE MEMBERS FIELD OF THE INVENTION The present invention relates to an adjustable deflector made of prefabricated reinforced concrete members serving for discharging hot air from industrial halls.

BACKGROUND OF THE INVENTION It is well known that, for industrial halls with average heat release,which include china and ceramic factories, forges, low and medium capacity foundries, and also the various manufacturing departments within the glass and chemicals industries,sky-lights made of metal frames and having movable panes provided with metal sashes are used for heat release. With these system, the hinged wings open to 30 only, thus offering high resistance to the evacuated air, and this makes them inadequate for effective natural ventilation.

A continuously adjustable deflector is also known, made of aluminum, which however has the disadvantages of a complicated and costly adjusting system and of its critical position on the longitudinal center-line of the hall.

Other solutions make use of to deflectors provided with forced air ventilation systems,however,these are costly and in addition,need continuous supervising and maintenance.

The adjustable deflector according to the instant invention eliminates the disadvantages of these discharge systems known up to now due to the fact that it consists of a first hollow factory-cast reinforced concrete structure of parallelipipedic shape, strengthened by transverse and/or longitudinal ribs having small metal plates embedded at the top, to which hinges are attached, which ensure the fixing and tilting of a pair of obturat ing covers, a reinforced concrete deflector-caisson being mounted over the first structure, the concrete deflector exceeding the width of supporting structure and having the shape of a plate provided with strengthening and supporting ribs, corresponding to the ribs of the frame-caisson,small metal plates being embedded in the deflector-caisson ribs to which metal sections are welded to attack wind-protection screens alternatively the ribs are laterally extended to both sides of the plate of the deflector caisson and the screens for protection from the wind are directly mounted on the ends of the ribs. The obturating covers of the deflector according to this invention are either manually handled, from the roof, or handled with the aid of a roll and cable system operated from below.

DESCRIPTIONHOF THE DRAWING FIG. 1 is a perspective view of the adjustable deflector in the first structural alternative FIG. 2 is a perspective view of the adjustable deflector in the second alternative FIG. 3 is a plan view of the frame-caisson FIG. 4 is a cross section in a vertical plane through the frame-caisson,along line b-b in FIGS FIG. 5 is a longitudinal section in a vertical plane through the frame-caisson, along line a-a in FIGS FIG. 6 is a plan view of the caisson-frame FIG. 6

FIG. 10 is a cross section in a vertical plane through a hall provided with an adjustable deflector with manually operated air evacuation control covers and FIG. 11 is a cross section in a vertical plane through a hall provided with an adjustable deflector with mechanically operated air evacuation control covers.

SPECIFIC DESCRIPTION According to the invention,the adjustable deflector is composed of a frame-caisson I made of pre-cast reinforced concrete and a deflector caisson 8, also made of precast reinforced concrete. The frame structure or support comprises a pair of horizontally extending beams which lie in spaced apart vertical planes.

The parallelipipedic hollow frame-caisson 1, strengthened with longitudinal and transverse ribs 2 the number of which is chosen depending on the strength of the caisson structure and on its overall dimensions,is provided,in front of each transverse rib,with small metal plates 3,embedded in the concrete at the top (upper edges) of the caisson walls,and to these plates are attached hinges 4 for the fixing and swinging of outwardly swingable a pair of covers 5 each,obturating air access through the deflector.

The plate-shaped deflector caisson 8, the width of which exceeds that of the frame-caisson 1 on both sides, is also provided with longitudinal and transversal support and strength ribs 9, the number and position of which are chosen depending on the ribs 2 of the framecaisson l, the longitudinal ribs having embedded at their bottom, from the time of casting, the fixing and assembling metal plates 10. The deflector structure has a horizontal slab whose outer edges project beyond the vertical beams of the support structure and which rests, by its ribs, upon the ribs bridging the vertical beams.

In a first structural alternative, the longitudinal ribs at the extremity of the deflector caisson 8 are also provided on their outer sides at spaced location with metal plates 10 to which metal sections 11 are welded, to which in turn, vertical wind shields 12 are attached, the Windshields being made of sheet metal, asbestos cement, plastic materials,etc.

In the second structural alternative, the transversal ribs 9 of the deflector caisson 8 are extended,exceeding the width of the caisson plate and allowing the prefabricated reinforced concrete protection screens 12 to be fixed to their ends.

In both structural solutions,the obturating covers 5 can be operated,either by hand or with the aid of rolls 6 and cables 7 operated from the floor below through pulley blocks or any other relevant device.

For the purpose of achieving an adjustable deflector according to the invention, the frame caissons 1 are fixed to the strength structure of an industrial building, by well-known means such as welding,anchoring,concreting etc, then the deflector-caissons 8 are mounted in such away that the longitudinal ribs 219 of both prefabricated elements overlap, and the small metal plates 3, 10 within these ribs are welded together. To the metal plates 3 at the top outside part of the longitudinal ribs of the frame caisson l are welded the hinges 4 and covers 5; rolls 6; cables 7 or blocks lo as the case may be,are also fixed to the plates. With this arrangement, the obturating covers 5 may be closed in cold weather or opened in warm weather, the number of covers to be closed or opened differing depending on the quantity of hot air to be discharged.

After mounting the roof, the protection screens 12 are fixed either by attaching them to the metal sections 11 or directly to the extended ribs 9 of the deflector caisson.

The adjustable deflector according to the invention has the following advantages The main constituting elements,being made of factory prefabricated reinforced concrete,are readily erected, this representing another towards wholly industrialized,factory buildings Depending on the position on the plan of the heat sources, the deflector may be placed with its centerline corresponding to the longitudinal center-line of the hall, and also discontinously on any cross axle of the hall The mobility of the obturating covers ensures the variation of the evacuation section of the heat through the inside of the hall,depending on outside temperature.

We claim:

1. A vent for an industrial hall, comprising:

a longitudinally extending support structure precast unitarily from reinforced concrete and adapted to be disposed longitudinally along the roof of an industrial hall, said support structure including a pair of horizontally spaced beam slabs lying in respective vertical planes, horizontally spaced transverse ribs bridging said beam slabs and at least one longitudinal rib extending parallel to said beams and strengthening said structure, all said ribs lying at least at an upper portion of said support structure and constituting first ribs;

at least one pair of obturating covers hingedly mounted at the upper edges of said beam slabs and swingable outwardly relative thereto;

a deflector structure precast unitarily from reinforced concrete and including a horizontal deflector slab having longitudinal edges overhanging said beam slabs, and longitudinal and transverse second ribs strengthening said deflector structure and resting upon said first ribs, said second ribs spacing said deflector slab above said beam slabs; and

a pair of Windshields lying in respective vertical planes spaced from said longitudinal edges of said deflector slab and affixed thereto.

2. The vent defined in claim 1 wherein said wind shields are affixed to the transverse ribs of said deflector structure.

3. The vent defined in claim 1, further comprising a cable system operable from a remote location and operatively connected to said obturating covers for swinging same, said support structure being provided with metal plates carrying hinges of said covers and affixed to said deflector structure. 

1. A vent for an industrial hall, comprising: a longitudinally extending support structure precast unitarily from reinforced concrete and adapted to be disposed longitudinally along the roof of an industrial hall, said support structure including a pair of horizontally spaced beam slabs lying in respective vertical planes, horizontally spaced transverse ribs bridging said beam slabs and at least one longitudinal rib extending parallel to said beams and strengthening said structure, all said ribs lying at least at an upper portion of said support structure and constituting first ribs; at least one pair of obturating covers hingedly mounted at the upper edges of said beam slabs and swingable outwardly relative thereto; a deflector structure precast unitarily from reinforced concrete and including a horizontal deflector slab having longitudinal edges overhanging said beam slabs, and longitudinal and transverse second ribs strengthening said deflector structure and resting upon said first ribs, said second ribs spacing said deflector slab above said beam slabs; and a pair of windshields lying in respective vertical planes spaced from said longitudinal edges of said deflector slab and affixed thereto.
 2. The vent defined in claim 1 wherein said wind shields are affixed to the transverse ribs of said deflector structure.
 3. The vent defined in claim 1, further comprising a cable system operable from a remote location and operatively connected to said obturating covers for swinging same, said support structure being provided with metal plates carrying hinges of said covers and affixed to said deflector structure. 